"Now that he is safe, it's time to focus back on healing," his wife, Rose Stahl, tells PEOPLE.

On May 9, Rose reported to the LAPD that her husband, who starred in Terminator 3, was missing. She now says she's "elated" that he has resurfaced and is hopeful he's getting the help he needs in rehab.

Rose, 30, doesn't know if Nick's 30-day stay at an undisclosed facility, which began Saturday, will pull him out of what she says has been the worst addiction cycle of the actor's life – one in which he's turned down acting roles for nine months and has lived apart from her and their 2-year-old daughter since February.

Rose Stahl told PEOPLE that Nick sent an "unemotional and unapologetic e-mail" at about 10 p.m. on Friday, saying he's okay, that he was entering a 30-day rehab program that night, and that he planned to make some arrangements to get his clothes.

Terminator 3 star Nick Stahl, who was reported missing on Monday, reached out to friends late Friday to say he's okay and entering rehab, his wife tells PEOPLE.

"I'm relieved," says Rose Stahl, 30, who told PEOPLE earlier on Friday that she was worried her husband might die from an overdose.

"But I'm also skeptical that he really in rehab," she adds.

Rose Stahl, who on Monday reported her husband missing to the LAPD, says Nick sent an "unemotional and unapologetic e-mail" at about 10 p.m. on Friday, saying he's okay, that he was entering a 30-day rehab program that night, and that he planned to make some arrangements to get his clothes.

Terminator 3 actor Nick Stahl has been reported missing since May 9, but don't expect a major police manhunt.

"Were not treating it like a crime," says LAPD Detective Carmine Sasso, who is overseeing the investigation. "We're not pounding the pavement or knocking on doors on this one, just networking."

The actor, 32, has experienced a number of personal problems. He's been separated from his wife Rose since January, and in February she filed court papers seeking child support for their 2-year-old daughter.

In his most recent film, Nick Stahl plays a man looking for his missing wife.

In a bizarre real-life parallel, Stahl is now missing. While police continue their search for the 32-year-old actor, who was last seen on May 9, the director of 388 Arletta Avenue says he saw no signs of trouble when he shot the thriller with Stahl in Toronto a year and a half ago.

"He was fantastic – not a single problem," director Randall Cole tells PEOPLE. "He was a total professional and knew his lines. There was no diva behavior at all." Nor was there any hint of turmoil between Stahl and his wife Rose, who visited the set along with their then-infant daughter, Marlo. But court documents filed earlier this year tell a different story.